A little sister’s all you need

Keiki was holding the pair of pure
white panties with his arms stretched towards the ceiling. No matter
how you looked at it, this clearly made him look like a pervert.

“Really, whose panties are these…?”

Just recently, Keiki had found out that
his new Cinderella candidate, Fujimoto Ayano, was actually a hardcore
olfactophile. Basically, she’s the kind of person who’s turned on
by a boy’s body odor. She had become addicted to Keiki’s smell
when he caught her on the stairs, and she practically glued herself
to him for days afterwards.

“Even though Fujimoto-san has a cute
face, she really is a pervert through and through…”

Thinking that, Keiki decided to give up
on the thought that Ayano was Cinderella.

“So, is Cinderella really one of the
girls from the club…?”

The girl who is a genius when it comes
to calligraphy, and who likes to play pranks on her junior: Tokihara
Sayuki.

The straightforward and honestly cute
angel-like Kohai: Koga Yuika.

The kind tsundere classmate: Nanjou
Mao.

But all of them were perverts.

Like wanting to become Keiki’s pet,
or wanting him to become her slave. Keiki seriously doubted that
these wishes were born out of romantic feelings.

“Mhm… I don’t get it.”

Though he had wished that these pure
white panties belonged to a normal girl, and she had really just
happened to drop them by accident, Keiki had started to believe that
this wish wouldn’t be granted.

“But… it’s true that they’re
all cute.”

Even though he knew their true
personalities, his heart couldn’t help but skip a beat whenever
they showed him a bewitchingly cute smile. If you ignored the fact
that they were all perverts, they were all charming women with no
room for complaints.

“Would I be able to fall in love with
one of them because of her cuteness, even if they’re all perverts?”

In other words, ‘Would I be able to
accept a perverted girl?’

If one of those girls really turned out
to be Cinderella, Keiki still didn’t know how he would respond to
their feelings.

“…I guess I’ll go wash my face to
freshen up.”

He hid Cinderella’s panties in a safe
location and left his room. Having just woken up, he was wearing a
normal t-shirt and shorts. He went downstairs to the first floor
bathroom. When he casually opened the door…

“…Uh?”

That baffled voice came from the person
currently occupying the bathroom. Her almost-shoulder-length hair was
still wet, maybe because she had just finished taking a shower. She
seemed to have finished putting on her panties, because she was
currently holding her bra in her hands, with her breasts still
enjoying some fresh air. Her slender shoulders, her cute belly
button, her white legs — everything was visible, and there wasn’t
anything that you could complain about.

“…Hey, Nii-san?” Mizuha didn’t
panic at all, but only hid her breasts with her hand.

Though her cheeks were slightly
flushed, she still returned the gaze of her big brother, who still
couldn’t look away.

“Even if we’re siblings, it’s
still embarrassing, you know?”

“Yes! I’m very sorry!” The boy
bowed down with all of his might and hurriedly closed the door.

“Ahh… that really surprised me.”

Her and Keiki had lived in the same
house for years. Accidentally watching the other change clothes,
accidentally opening the door to the bathroom when the other was
using the toilet — things like this happened fairly often. They
tried their best to make sure these kinds of accidents didn’t
happen, and they had only happened very rarely since they had entered
high school. Since his mind was somewhere else, though, Keiki had
completely forgotten that Mizuha liked to take showers in the
morning.

“When she’s wearing clothes, she
looks rather slender.”

But in reality, her breasts were quite
formidable in size. And her pastel green panties also really suited
her. Remembering that sight made Keiki’s cheeks burn up.

Keiki knew very well that he was a
siscon to a certain agree, but even he was aware that these feelings
just now were completely unacceptable. A big brother shouldn’t lust
after his little sister.

Though he wanted to wash his face to
calm down, the bathroom was currently in use, so he had no other
choice but to wait. And this was only the beginning of day.

After that, Mizuha finished putting on
her clothes and came to Keiki’s room. They sat on top of the bed,
backs against each other, reading. Things like this would usually
only be done by a young couple in love, but to Keiki and Mizuha this
level of skinship was normal. Though Mizuha hadn’t said anything
about the incident, Keiki noticed that she was turning the pages of
her book more slowly than usual.

“Hey, Nii-san?”

“Mhm, what?”

“What do you think of pastel green
panties?”

“I really think that they suit you,
Mizuha.”

“Thanks.”

“You’re welcome.”

At first glance, it was a really weird
back-and-forth. But in order to hide their embarrassment, it was a
necessary conversation to distract them from what had happened. Like
a joke to lighten the mood.

“Entering the bathroom when I was in
the middle of putting on clothes might’ve been nothing but an
accident on Nii-san’s part, but that doesn’t mean that I didn’t
mind.”

“I’m really sorry about that.”

“It’s fine. I know that you didn’t
do it on purpose.”

There was no tone of anger to be found
in her voice. It seemed like she really did forgive him.

“But it’s weird. This hasn’t
happened since we were in middle school.”

“Well, I normally am really careful
about it, but it totally slipped my mind today because I was thinking
about something else.”

“Are you troubled by something again?
Do you need someone to talk to?”

“It’s a bit difficult to explain…”

“There’s no need to hold back.
Nii-san and I are family.”

“…Oh no, I just mistook my little
sister for an angel.”

He really was proud of his little
sister. She was like an oasis that would heal his heart every time it
got hurt because of perverted girls — girls both inside and outside
the club.

“Then, what would you do if I told
you that I wanted to make a girl my pet?”

“I’m joking. Since Nii-san is
always so serious, I would support you.”

“O-Okay. Thanks.”

“You’re welcome. That was my thanks
for you praising my panties.”

“What kind of reason is that?”

With their backs to each other, they
couldn’t read each other’s expression. But their conversation
still continued.

“By the way, it seems like there’s
a pretty famous lucky charm for high school girls.”

“Lucky charm?”

“When you want to confess to a boy,
you wear pink underwear. It’s supposed to bring good luck,” Keiki
explained.

“I know. That one’s pretty popular
with the girls.”

“I see. It seems like it’s spread
pretty far…”

“Why does Nii-san know of that?”

“A certain Senpai told me.”

“So that’s why.”

With that, the conversation stopped and
they once more focused on reading their respective books. As the
sunlight pleasantly shone into the room, only the sound of turning
pages could be heard.

“Hey, Nii-san?”

“Mhm?”

“Sometimes, it’s nice to just
relax, right?”

“……Yeah.”

Being with someone who lets you relax
is the best. For Keiki, this was the most blissful way to spend time.
His heart had been through a lot of stress lately, and he felt like
he really needed something like this.

After around two hours of reading,
Mizuha closed the book in her hands and stood up from the bed.

“Let’s have lunch soon. Is there
anything you want, Nii-san?”

“As long as it’s made by Mizuha,
I’m fine with absolutely anything.”

“That kind of phrase is a wife’s
worst nightmare.”

“Simple is best. How about some
noodles?”

“Then, how about some spaghetti?
Maybe with some minced meat,” With a cheerful tone, Mizuha left the
room.

“Really, Mizuha would be a great
wife.”

She was a cleaning fanatic, so she
always kept the house spotless, and her cooking was top notch. Keiki
was sure that there weren’t many women with household skills like
Mizuha.

“Now then, what should I do after
lunch—?”

He could watch a movie, and just lazing
around until evening didn’t sound too bad. Keiki really thought
that this relaxing time would continue. But, about one hour after
that, it all completely changed.

An hour later, the Kiryuu siblings had
finished eating lunch and were watching TV when the doorbell rang,
indicating that they had a visitor. Keiki responded to it, and when
he opened the door, he was greeted by a black-haired beauty. It was
Tokihara Sayuki, wearing a white blouse and long skirt, giving off a
very adult-like aura.

“Good day to you, Keiki-kun.”

“Sayuki-senpai, what brings you
here?”

“I had some free time so I decided to
come over. Here, I brought a cake that I really recommend. Feel free
to eat it with Imouto-san.”

“Ah, how polite of you.”

“Fufu, so Cake-kun is a cannibalist.”

“I thought you would say that. It’s
really not funny… But, since you’re here, why don’t you come in
for a bit?”

“Sorry to intrude~”

Dropping the cake box off in the living
room, he guided Sayuki towards his own room.

“Oh, you really keep it clean in
here.”

“Mizuha is a cleaning freak, so she
would definitely scold me if I didn’t clean up here from time to
time.”

“How nice. In the near future, this
will be my pen.”

“It won’t.”

“Is there something about me that you
aren’t satisfied with? I’m a beautiful, big-breasted Onee-san,
right? Am I not desirable for boys of your age?”

“Yes. You were undesirable the moment
you asked me to make you my pet.”

He motioned for Sayuki to sit down on a
cushion reserved for guests and sat down next to her.

“So, why did you come here?”

“There is something that I wanted
Keiki-kun to see.”

“Something you wanted me to see?”

The girl opened her bag and took out a
headband with dog ears, and placed it on her head. After that, she
also donned an artificial dog tail.

“How is it?”

“Even if you ask me that…”

With the headband disappearing into her
natural black hair, the ears completely looked like they were real.
Keiki could only watch, wondering what she would do next, completely
unable to understand why she would do something like this at her
Kouhai’s house.

“You don’t have to be so wary. I
won’t do anything weird.”

“I think you’re doing something
pretty weird already…”

“Is it not cute?”

“It’s a bit cute, yes.”

“Fufu, I like men who are honest.”

Actually, Sayuki looked really lovable
right now. It had such an impact on him that Keiki completely forgot
about the whole pet thing, and found himself wanting to take a
picture of her.

“I’m sorry for before,” Sayuki
said.

“About what, Senpai?”

“When I was supposed to help out with
the trash collection. See, uhm, a lot happened, right?”

“Ah. That might be true, yes.”

The memories of what had happened under
the bridge slowly started to rise to the forefront of Keiki’s mind.

“I think that I really went too far
there, and I’m reflecting on it. Biting the hand that feeds you
like that would make me a failure of a dog.”

“I’m not the hand that feeds you,
though.”

“And, even though I’ve reflected on
it myself, I still feel like there was something lacking from
Keiki-kun.”

“What do you mean?”

“It’s true that I was a bit
childish. But that’s just because Keiki-kun’s love for me wasn’t
nearly enough.”

“Ehhhh…?”

“You see, dogs get nervous when they
can’t feel enough love and attention from their owners. That’s
why I came here today: To be cherished by Keiki-kun.”

“I do understand the reasoning behind
it, but what exactly should I do?”

“I want you to treat me like a dog.”

“That’s not happening.”

“I see, so you won’t. Well, I
really didn’t want to have to use this, but…”

Sayuki slowly took an item out of her
bag. It was the BL manga drawn by Nanjou Mao. A doujinshi where Keiki
and Shouma — no, Keeki and Shouto were exceptionally close to each
other, to put it mildly.

“If you won’t, I will be forced to
show this to Imouto-san.”

“Please refrain from doing that!”

“Then you should know what you have
to do, right?”

“………Fine. I will treat
Sayuki-senpai like a dog.”

When Keiki accepted her conditions,
Sayuki let out a beaming smile.

“But what exactly should I do?”

“Have you never played with a dog
before, Keiki-kun?”

“I have. We had a big dog at my
grandfather’s place.”

“Then you just have to do to me what
you did with that dog.”

“Ah, I see. Then… Tokihara-senpai,
hand!”

“Woof!”

As Keiki stretched out his hand with
these words, Sayuki followed suit and put her own hand on top of his,
with a very blissful expression.

Seeing that, Keiki became a bit
flustered.

“W-What should I do next?”

“Let me see… I want you to pet me
on the head.”

“Understood. Then, come over here,”
Keiki beckoned her to come closer, and Sayuki did as she was told,
sitting next to him.

As he started petting her on the head,
she happily closed her eyes.

“Fufu… This makes me really happy.”

“I’m happy to hear that.”

Although Keiki was a bit worried when
she asked him to ‘Treat her like a dog’, skinship of this level
was of no problem for him. On the contrary, he even started to enjoy
it.

Thinking that, he continued to pet her.

“……”

Before he had realized it, Sayuki was
looking straight at him with slightly flushed cheeks and expectant
eyes. This look on her face made Keiki even more nervous.

“…Hey, Keiki-kun.”

“W-What is it?”

“When you pet a dog on the belly,
they get really happy too.”

“………Eh?”

A few minutes later, the preparations
were done and Sayuki was lying down on top of the bed, face up. She
had the three lowest buttons of her blouse opened, leaving her white
belly perfectly visible. Normally, dogs won’t show their bellies to
just anyone, but only to the people they really trust.

Does this mean that Sayuki trusts me
this much? As the young boy thought that, he could feel his
cheeks getting hotter.

“Hey, hurry up and pet me.”

“Y-Yes…”

While sitting next to Sayuki, he
nervously started petting her on the belly.

“…Mhm… Fufu, it tickles.”

“Yeah, I would think so.”

“It feels really weird, and it’s
even more embarrassing than I thought it would be.”

“Then should I stop?”

“No. I’ve finally gotten Keiki-kun
to treat me like a dog, so I won’t let it end here. It tickles, and
I’m embarrassed, but it still feels very comforting. Do it more.”

“Understood.”

The girl once more closed her eyes,
seemingly enjoying the situation.

And she once more started breathing
heavily, which sounded very erotic. It was a bit too stimulating for
the young boy.

“You know, I feel like I’m starting
to understand what a dog feels like,” Sayuki said.

“What do you mean by that?”

“Being pet like this makes me feel
all happy inside, and it feels like I don’t need anything else in
my life. Dogs must want this all the time because they can directly
feel the kindness of their beloved owners.”

“So Sayuki-senpai is happy?”

“Yes, it feels like I just ate a lot
of sweets.”

“I don’t really get it, but I can
tell that you’re enjoying it.”

“To show Keiki-kun what this feeling
is like — I can only do something like this, I think?” Saying
that, Sayuki stretched out both of her arms and pulled Keiki into her
breasts.

“—Mguh?!”

In that moment, Keiki’s face felt
really happy. They were so incredibly soft; the best kind of cushion
there could ever be. The softness combined with her sweet smell
caused Keiki to immediately start to relax.

“What’s your impression of your
favorite breasts?”

“To put it simply… it’s the
best.”

“Good boy. Ahh, you’re so cute.
Just how cute can you be, Keiki-kun…?”

Maybe she found the words of her male
Kouhai even more stimulating. Her legs started flailing up and down
like a little kid’s, and she strengthened her grip on Keiki’s
head. Because of that, Keiki’s head started to sink even deeper
into her breasts, until—

“Fugah?! Hmmmghghg?!”

Just as one would expect, Keiki’s air
supply was cut off from being buried inside the girl’s big breasts.

It was like heaven and hell at the same
time. And just when Keiki started to black out—

“Nii-san, I brought some tea for the
two of—”

With terrible timing, the door to
Keiki’s room opened. If you thought about it objectively, it was
pretty obvious that Keiki’s mindful little sister would prepare
some tea for her guest. And when she entered the room with some tea
and sweets, her reaction was to be expected. After all, her big
brother was currently face-deep inside a girl’s breasts inside his
own room, so Mizuha decided to act like she didn’t see anything.

“Take your time~” She backed out
the door.

“Wait?! I don’t need your
consideration here!”

Leaving Sayuki behind, Keiki dashed
after his little sister. And with that, an emergency family meeting
started inside the living room. The reason for that was of course the
illicit relations going on inside the house.

“Forcing a girl to wear dog ears and
pushing yourself onto her chest like that… Nii-san is quite the
pervert after all.”

“You’re wrong! It’s not like
that! I was just petting Sayuki-senpai on the belly is all!”

“Petting a girl on the belly? I
really can’t advocate a hobby like that.”

“Ahh?! The more I try to explain the
situation, the worse it gets…!”

After that, Keiki got scolded by Mizuha
for quite some time.

This must be what it feels like to
be scolded by your wife…

Around 3pm, the silhouettes of Sayuki
and Keiki could be seen standing in the entrance of Keiki’s house.

“I really had fun today.”

“It felt like my lifespan shortened
when Mizuha walked in on us…”

“Really? It actually felt really good
to me.”

“Unlike Senpai, I don’t feel any
pleasure from being embarrassed like that.”

After Keiki was freed from Mizuha’s
long lecture, he had returned to his room, where Sayuki was patiently
waiting for him, only for her to tell him “I guess I’ll excuse
myself for today.”

She had only stayed over for about two
hours. It seemed like she hadn’t planned on staying for too long
anyway. As Keiki escorted her to the entrance, he asked her a certain
question.

“Sayuki-senpai, can’t you find
anyone else other than me?”

Back when Sayuki had asked Keiki to
‘Make me your pet’, Keiki answered with a very direct ‘NO!’
So why? Why wouldn’t she search for someone else—?

That’s what he thought.

“There should be other, more suitable
people for Senpai that’d be willing to make you their pet, so
why—”

What stopped him mid-sentence was
Sayuki’s finger on his lips. Keiki’s heart skipped a beat.

“Even hardcore masochists like me
have their pride. I won’t give my heart to just anybody, and I
don’t want to be dominated by anyone else. I can only think of
Keiki-kun as my master,” With these words, Sayuki came closer and
licked Keiki’s cheek.

“Sayuki-senpai?!”

“I’m marking you. Since my owner
seems to be quite popular, I have to show them that you belong to me,
and I to you.” Winking at Keiki, she turned around and walked away.
“Thanks for today. Thanks to your love, I’m really satisfied.”

“Can you not say things that could be
easily misinterpreted?”

Leaving words behind that could stir up
rumours in the neighbourhood, the girl went home.

Approximately five minutes after Sayuki
went home, the doorbell to the Kiryuu household rang again. What
greeted Keiki as he opened the door was a beaming smile.

“Hello, Keiki-senpai.”

“Yuika-chan? What brings you here?”

“Yuika was bored, so she decided to
come over and play.”

It was like she was switching places
with Sayuki. Now it was Keiki’s blonde-haired Kouhai, Koga Yuika.
Today, she was wearing a skirt, which was a bit on the short side,
and a cream-coloured cardigan, which made her give off the impression
of an energetic girl.

“Here, please take these sweets Yuika
made. Enjoy them with Mizuha-senpai.”

“Ah, how polite. I will.”

Inside the paper bag she brought, there
were several neatly-wrapped madeleines.

“Since you’re here already, come on
in.”

“Sorry to bother~”

Handing over the sweets to Mizuha, who
was sitting in the living room, he guided Yuika to his room.

“Woah, this is the first time Yuika
has been in Keiki-senpai’s room,” The blonde-haired beauty looked
around the room. “Yuika can’t find any perverted books at first
glance.”

“It would be really bad if you found
them that easily.”

“So that means that you have some?”

“Uhm……… For now, have a seat.”

He motioned for her sit down on the
same cushion, and sat down across the table. Mizuha brought some tea
into the room, and Yuika voiced her thanks. As Yuika started
elegantly sipping the hot tea, Keiki closely inspected her. He had
felt this way with Sayuki before, but having a girl inside his own
room really did make him quite nervous. After all, she wouldn’t
just come visit if she didn’t have any romantic feelings for him.
As an adolescent boy, this kind of thing made him really happy.

But that would only be true if it were
a normal girl. And Koga Yuika wasn’t normal. Stuffing your
freshly-worn panties into the mouth of a boy isn’t normal behaviour
at all. Though he had a similar uncomfortable feeling with Sayuki,
Yuika would become a bit more dangerous if things went south.

“So, what brings you here today?”

“Yuika will just say it outright. She
came here to train Keiki-senpai.”

“Training, huh……… Wait,
training?!”

“Recently, Keiki-senpai hasn’t had
any respect for Yuika. For example, you took a picture when Yuika was
wearing a bunny girl suit, and you grabbed her breasts without her
consent. With that in mind, Yuika thought that she needed to teach
him what it means to be a slave. She needs to give him a bit of
discipline.”

“No no, I’m not your slave, you
know? I’m really not a big fan of you saying things like ‘training’
and ‘discipline’…”

“Don’t worry. Yuika did say
‘training,’ but it will only be very gentle. She just thought
she’d embarrass Keiki-senpai a bit.”

“Something embarrassing…? What do
you have in mind, then?”

“Precisely this right here!”

In one fluid motion, she took out all
the parts to a bunny girl costume: The rabbit ears, the black-netted
tights, and the black suit.

But for some reason, Keiki had a really
bad feeling as he inspected the costume in front of him.

The size seems to be a bit bigger
than the one she wore at the calligraphy clubroom…?

“Uhm… So Yuika-chan is going to
change into a bunny girl suit here?”

“What are you saying? Keiki-senpai is
going to be the one to wear this costume.”

“Eh…?”

“Yuika will thoroughly enjoy the
sight of an embarrassed Senpai while he wears these clothes.”

“Y-You’re joking, right?”

“Of course Yuika isn’t joking? She
is super serious.”

Yuika responded to Keiki’s shaking
voice with a beaming smile, which made him shiver.

This girl is serious. She really
wants me to wear this bunny girl costume.

“Are you seriously forcing a boy to
wear a bunny girl costume?! Nobody’s going to gain anything from
that, you know?!”

“If you won’t listen, Yuika will be
forced to punish you.”

“Punish me…?”

“Yuika will show this book to
Mizuha-senpai.”

“T-That’s—?!”

It wasn’t the first time he had seen
that book cover today. It was the BL manga that Mao-sensei had made.
It seemed like every female member of the calligraphy club owned a
copy.

The owner of the room said this as he
looked down at her. He wasn’t wearing his usual clothes. Rabbit
ears were protruding upwards from his head. His legs were wrapped in
netted tights. On his butt, he had a small, round tail, which only
intensified how unbalanced his appearance was. Inside his own room,
this high school student was wearing a bunny girl costume. When girls
wear such an outfit, it makes every boy’s heart flutter, but a boy
wearing it looked like a scene straight out of hell. Seeing himself
in the mirror made the poor boy want to jump out of a window.

“Fuu, Yuika just laughed enough for a
whole year.” After rolling around on the floor, hugging her belly,
she finally got up. “Let’s take a commemorative picture, too.”

“Ehhhh…”

“Why are you so shocked by that?
Keiki-senpai took a photo of Yuika when she wore that bunny girl
costume.”

“Just do as you want…”

“Now then, Yuika would like a sexy
pose.”

“Yes, yes… something like this?”

“Ohh, that leopard-pose is great!
Please look over here!”

Yuika looked happy the whole time while
she took photos of Keiki.

“Ahaha. To look so happy while
wearing clothes that would make any girl embarrassed; Keiki-senpai
really is a rascal.”

“Rascal?! Did you just call me a
rascal?!”

Even though Keiki was the one who was
forced to wear these clothes. While he was miffed at being so
unreasonably insulted, the Kouhai continued her photo session. After
some time, Keiki finally received permission to sit down again. Now a
blonde-haired girl and a bunny boy were facing each other at the
table. It really was a weird scene to behold. Yuika had an even more
comforting smile on her face than before.

“Keiki-senpai really is a weird
person.”

“You’re talking about these
clothes?”

“No. She’s talking about you. A
normal person wouldn’t just sit there and let this be done to him.”

“Well, you threatened me, so I didn’t
really have any choice at all.”

“…Then, did you start to hate Yuika
because she forced you to do this?”

“Eh?” Not expecting a question like
that, Keiki looked up at her in surprise.

As he did so, he saw that Yuika was
grinning at him.

“Fufu. It’s because of that
expression that I want Keiki-senpai to become my slave.”

Keiki had been played. Although she had
done some pretty cruel things to him, he never had hated her for it.
Realizing that, Keiki got a bit embarrassed.

“Since Yuika is in a good mood today,
she will give Keiki-senpai a reward.”

“Reward?”

She stood up on the spot and put her
hands under her skirt, only to pull down her cute, blue panties.

“Wait?! Why are you taking off your
panties?!”

“Yuika thought that she needed to
give Senpai something good to mix it up a bit. It’s Yuika’s duty
as a master to reward her servant from time to time, right?”

“But why does it have to be your
underwear?!”

“Well, any boy would love being given
a pair of girl’s panties, right?”

“Eh? Well, that’s…”

“Would they hate it?”

“No, they’d be happy about it. But…
how do I say it… it doesn’t exactly have to be freshly-worn
panties, and what makes them so great is that we can’t get them
easily.”

“Yuika doesn’t really understand.”

“Do you not have any qualms about
just handing out your panties to a boy?”

“Of course Yuika wouldn’t do this
to just any boy. Keiki-senpai is special to Yuika, after all.”

“Special…”

This was something that Yuika had said
before. That the only person she wanted to make her slave was Keiki.

“Since you’re special to Yuika, she
would always give you her panties if it made you happy.”

This reminded Keiki of when Yuika had
confessed to him that she wanted him to become her slave. Thinking
that it would make him happy, she took off her panties at the time.
Though her means were a bit strange, she did just want to make him
happy.

“………”

“What happened? You’re just staring
at Yuika.”

Once Keiki had found out about Tokihara
Sayuki’s and Koga Yuika’s real personalities, he had thrown away
the possibility that one of them might actually be Cinderella. But
even Ootori Koharu, a perverted stalker girl, had fallen in love with
Shouma. She became a stalker exactly because she felt that way
towards him.

What if Sayuki and Yuika were the same?
What if their ‘love’ turned them into total perverts?

“Uhm, Senpai? It’s pretty
embarrassing if you keep staring at Yuika like that…”

“O-Oh yeah, sorry…”

His Kouhai’s cheeks were slightly
flushed. Just like that, she suddenly returned to being a normal girl
in Keiki’s eyes. Her cute, embarrassed expression completely threw
Keiki off balance.

“Also… Fufu, if you make such a
serious face while wearing those clothes, Yuika might start laughing
again.”

“You were the one who told me to wear
them… Well, I guess I can change back now. Yuika-chan, would you be
so kind as to leave the room for a second?”

“Yes, Yuika will do that.”

She went to stand up, but had
completely forgotten that her blue panties were still pulled down
around her thighs. Because of that, she lost her balance, and—

“…E-Eh?”

As expected, her small body started
falling over.

“Kya?!”

“Careful!”

Keiki tried to catch her, reaching
overtop of the table with his hand, only for him to fall over as well
with a loud crash. Fortunately, it didn’t seem like Yuika was hurt.
Her sweet aroma and the feeling of her soft shoulders were making his
head spin, but he soon got a hold of himself.

“A-Are you okay?”

“Y-Yes. Yuika is fine…”

Hugging, and being hugged, the distance
between the two of them was practically nonexistent. And in that
position, their gazes met. The young girl’s blue eyes were watery,
and her shoulders were tensing up, showing that she was indeed a bit
nervous. That sight of her was so cute, that Keiki completely forgot
to let go of her—

“Nii-san? I heard a really loud noise
just now, but—”

And with the worst possible timing as
usual, the door opened.

“Ah—, am I interrupting something?”

Even with that weird scene in front of
her, Mizuha reacted rather calmly. Keiki was still wearing a bunny
suit, while Yuika wasn’t wearing any panties. And the two of them
were practically hugging each other.

“Wai–?! This was definitely not
supposed to happen?!”

“Yep. Though that’s supposed to be
my line,” Mizuha grinned as she closed the door.

Keiki hurriedly chased after her, but
he completely forgot that he was still wearing the bunny girl suit.
This of course resulted in an icy cold glare from Mizuha.

“I didn’t think that Nii-san had a
hobby like that.”

“This is the biggest misunderstanding
of the century!”

“Did you force your Kohai to take off
her panties?”

“Yuika-chan just took them off on her
own accord!”

“There’s no way that there’d be a
girl like that, right?”

“Well, apparently there is! There are
countless girls you’d never imagine would exist!”

The misunderstanding only continued to
grow. And it took him about 30 minutes until his little sister
finally started to trust her big brother again.

After Yuika had gone home for the
evening, the Kiryuu household finally calmed down again. The two of
them finished eating Mizuha’s delicious dinner, and he let her use
the bath first while he returned to his room. Currently, he was
laying on his bed, checking his smartphone.

“…Oh, I’ve got some messages.”

During the time he had been eating
dinner, he had left his phone in his room. When he checked the
contents of the messages—

‘I went on a date with Koharu-chan’
‘I went on a date with Shouma-kun’ ‘I finished the new
manuscript’ ‘I want Kiryuu-kun’s underwear. I wanna sniff it’
and so on, so Keiki just wrote short responses to all of them.

As for the date report, he sent a
blessing, but still mentally cursed them with ‘Normies should just
explode’. To the BL manga creator, he wrote ‘Good work~’. And
finally, to the sexual harassment email, he wrote ‘Why don’t you
just sniff your own panties, then?’. And, just when he had finished
responding to all of them, a new message came in.

“Nanjou?”

After he had responded to her email,
she had written him a short message.

‘Can we talk right now?’

Since he didn’t have any reason to
decline, he answered with a short ‘Yeah, sure,’ and shortly after
that Nanjou called him on the phone.

「—Evenin’,
Kiryuu.」

“It’s pretty rare for Nanjou to
call me. Did something happen?”

「Right
now, I’m drawing a scene where Shouto is playing with Keeki’s
nipples.」

“Is it okay if I hang up?”

「Wait
wait! I’m having trouble drawing it, so I was hoping that maybe you
could help me out.」

“I imagine I’m gonna regret asking,
but what do you have in mind?”

「Can
you moan for me? I wanna know what it sounds like when someone plays
with your nipples.」

“I wholeheartedly decline!”

「Then,
something else. Did President and Yuika come over to your house today
by any chance?」

“I’m surprised you know that.”

「The
two of them were proudly talking about their plans in the clubroom.
And I was listening to them while I was working on my manuscript.」

“I see. So they were planning it
ahead of time.”

Keiki had thought that Yuika’s timing
was a bit too perfect, but it seems like they were taking turns. It
really made Keiki wonder if they were actually on good terms with
each other or not.

「I
actually meant to obstruct them, but the deadline for my manuscript
made it impossible for me.」

“Is there even a time when you don’t
have a deadline for anything?”

「So…
nothing happened, I presume?」

“A lot happened, but I don’t really
want to talk about it.”

Especially not about the part when he
was forced to wear a bunny girl suit.

「I
see… Hm, it seems good so far.」

“What does?”

「Nothing.
I was just a bit relieved.」

“???” Keiki tilted his head after
hearing that from the other side of the call.

And since this was a phone call, he
couldn’t guess anything from her expression.

「Hey,
Kiryuu… Have you ever gone out with a girl before?」

“Excuse me? What’s with that so
suddenly?”

「I
know that you don’t have a girlfriend right now, but what about
middle school? I was just a bit curious.」

“I didn’t have one. Sadly.”

「I
see. Just as I imagined.」

“I’m gonna pretend that I didn’t
hear that comment…”

「…Then,
for example… what about… me?」

“Eh…?”

「I’m
just joking.」

“Don’t say that! That’s bad for
my heart! It made my heart race, so please don’t make any jokes
like that!”

「Ah,
I made your heart race, huh? …Fufu.」

“Why do you seem so happy about
that?”

「I-It’s
nothing. —Well, I’m hanging up now. Night!」

She suddenly started talking faster and
hung up immediately.

“What was that about…?”

Keiki had no idea what Mao had planned
with that. Maybe she really just wanted to hear his moaning voice,
but it still felt like there was more to it.

But, Keiki had no one except himself to
blame for his inability to see this flower of youthful love that was
blooming before his eyes.

It was immediately after his phone call
with Mao. Mizuha came to his room wearing pyjamas, having finished
taking her bath. For some reason, she was holding her favourite
hairdryer.

“Nii-san, will you dry my hair?”

“Eh? Ahh, yeah. Sure! Can do.”

Hearing Keiki agree to her request, she
walked up next to him and sat down. But for some reason, she sat down
on Keiki’s lap as he was sitting on the bed.

“Eh, there?”

“Here is fine.”

“Are you a spoiled child now,
Mizuha?”

“It’s the privilege of a little
sister to be spoiled by her big brother.”

“I can’t say anything if you use
your influence here.”

“Mhm. You may start~!”

“What kind of queen are you?”

As he let out a small giggle, he
started drying his little sister’s hear. After he started, Mizuha
closed her eyes, seeming to enjoy it.

The both of them had done this on a
regular basis when they were younger. But, no matter how close they
might have been, there were still a boy and a girl. They couldn’t
take a bath together anymore, and they had started sleeping in
separate futons. Although it felt like there was a certain barrier
between the two of them after today’s events, he decided to forget
about it for now.

“—And, done.”

“Thanks.”

Though she gave Keiki her thanks, she
didn’t move from her spot. Rather, she leaned her back against him
like a relaxed cat.

“I was really surprised today. To
think that those two girls were actually perverts.”

“It was the same for me when I first
found out.”

Because Keiki had to explain the
situation to her earlier, he had no other choice but lay bare the
true identity of Sayuki and Yuika. If he didn’t, he would be the
one treated as a pervert instead.

“This turned out to be rather
interesting, right, Nii-san?”

“It’s really not interesting at
all.”

“Might it be that you’re a bit
happy to be so popular like this?”

“That’s not…”

“They might actually be a good fit
for Nii-san. You’re a siscon, after all.”

“Being a siscon doesn’t make me a
pervert!”

She really has a sharp tongue today…

Since she very rarely got mad, this was
quite the unusual occurrence for Keiki.

“…Mizuha, are you mad?”

“I’m not really mad. It’s just…”
She turned around to look at Keiki, and with a sulking expression,
she continued, “Nii-san—is my Nii-san alone, okay?”

She sounded like she was blaming her
cheating boyfriend, like she wanted to claim sole ownership of her
big brother.

Conclusion: Keiki became a siscon
because his little sister Mizuha was just too cute.

A little sister’s all you need,
huh…

After taking a bath, Keiki returned to
his own room. He guessed that his little sister had already gone to
sleep because the lights were out in her room.

“I guess I’ll go to sleep as well.”

It was already past ten at night.
Though it was a bit earlier than when he normally went to bed, a lot
had happened today, which made him feel a bit more tired than usual.

“But, before that…”

He turned over the mattress of his bed.
Underneath said mattress were wood panels. Once he pushed on one of
the panels, the cover opened, revealing a small box. A secret space
that nobody except for him knew about.

Along with the love letter, he also hid
the panties of the girl in there. And his porn magazines, of course.

People always feel the urge to keep an
eye on their secret treasures. Recently, it had become Keiki’s
habit to check on the love letter and panties every night before he
went to sleep.

Well, I just checked this morning,
so they should still be there…

And just as he had guessed, the pink
envelope was present.

“……Huh? Eh? W-Why?!”

But even though he had just checked
this morning, a crucial item was missing from the hidden box.

“Cinderella’s panties… are gone?”

For Keiki, it was like Cinderella’s
glass shoe. That one and only physical hint had completely
disappeared.

Part 2:

Cinderella’s panties had disappeared
from Keiki’s room. For now, Keiki deduced that his little sister
Mizuha hadn’t taken them. After all, if that were the case, the
next morning would have started with a greeting from Mizuha, saying
“Nii-san, whose panties are these?”, followed by an emergency
family meeting. That only left two possible candidates.

Tokihara Sayuki and Koga Yuika.

Both of them had a chance to steal the
panties while Keiki was busy explaining the circumstances with
Mizuha.

“Maybe one of them really is
Cinderella…”

The following day, after class.

In the astronomy club room, an
emergency Cinderella meeting took place. The topic of the meeting
was, of course, ‘The stolen panties’, and the number of
participating members were three. With her trademark hoodie, Koharu
was sitting on a chair, with Shouma next to her. Across the table was
the victim.

As an aside, as per Shouma’s request,
the photos on the ceiling inside the astronomy club room were all
disposed of. Though the photos on the walls were still present, the
aura in the air was less intimidating than before. After Keiki’s
successful (?) work as a cupid, Koharu had agreed to further help him
concerning the Cinderella case, which is why she had offered him the
astronomy club room as the ‘Head office of the Cinderella search
corps’.

“Though I’m more surprised that the
Cinderella candidates are actually perverts. Tokihara-senpai is a
hardcore masochist, Koga-san is a hardcore sadist, and Mao-chan is a
fujoshi… I still can’t believe it.”

After the explanations were over,
Shouma was also up-to-date just like Koharu. He seemed very surprised
that all of the members of the calligraphy club were perverts.

“Keiki, you seem to have it pretty
rough, I see.”

“Aren’t you forgetting that you’re
not just a bystander in Nanjou’s case? She’s drawing a BL manga
with the both of us in it, you know.”

“Well, I don’t really mind if it’s
Keiki and me.”

“Geh?!”

“S-Shouma-kun?!”

After a short pause, the person who
created such a frozen atmosphere started giggling.

“Ahahaha, I’m just joking. Boys
aren’t in my strike zone.”

“There are good and bad jokes, you
know?”

“I-I thought my heart was about to
stop…”

With that, they returned to the topic
at hand.

“I initially thought that neither
Sayuki-senpai nor Yuika-chan were Cinderella. To me it seemed like
they just wanted me to become either their master or slave. I didn’t
think that either of them held any special affection towards me,
but…”

“But?”

“Yesterday, both Sayuki-senpai and
Yuika-chan were wearing pink underwear.”

“Hm? Underwear? What’s that about?”

“It’s a lucky charm. When
confessing to the boy you like, wearing pink underwear will increase
your odds of him saying yes. Or so the superstition goes.”

“Ohh, so that’s why.”

“When Sayuki-senpai confessed, she
also wore pink underwear. And the panties that Yuika stuffed in my
mouth were also pink.”

There is no way that Keiki could forget
those two scenes. He remembered the color of their underwear as clear
as day.

“And the envelope to the love letter
is also pink.”

“…I see. It sounds like too much of
a coincidence.”

A lot of girls know of that lucky
charm. Keiki really couldn’t believe that this all had happened by
pure chance.

“So I guess that there’s a chance
that either one of them, or possibly both of them, are in love with
Kiryuu-kun…”

“Uuu, it makes me feel a bit
embarrassed if you put it like that, but it seems plausible.”

He recalled what had happened the day
prior. Sayuki’s soft-feeling body, and Yuika’s embarrassed
expression. Thinking that they might have some sort of affection for
him, he felt the blood rush to his head.

“Well, it’s true that the two of
them have a high chance of being Cinderella.”

“Yes, considering that Cinderella’s
panties disappeared from Keiki’s room. And exactly on the day when
the two of them paid you a visit.”

“So Cinderella wanted to take back
her panties?”

“It would make sense, yeah.”

“But that means something very
important.”

“What do you mean?”

“If it really was Cinderella, why did
she take the panties with her, but not the love letter?”

“…So, she really did drop her
panties by accident…?”

“Maybe she panicked when she heard
Keiki returning to the room at the time.”

“But, that still leaves the mystery
of why she even had a new pair of panties with her in the first
place.”

Possibly because she had meant to
change into them later on. But there was no way to actually find out,
except for asking the person herself.

“Maybe it’s actually an important
clue that Cinderella took the panties back with her. That means that
the person who currently is in possession of them should be the girl
who wrote the love letter.”

“Yeah. That would be definite proof.”

For some reason, Cinderella is hiding
her real identity from Keiki. That would explain why she didn’t put
her name on the love letter.

What Keiki needed now was certain proof
that the candidate was indeed Cinderella. And the panties themselves
had very conveniently turned into that proof.

“Now you have another clue concerning
Cinderella at least.”

“Yeah…”

He once more needed to investigate both
Sayuki and Yuika. One of them must be the ‘thief’.

“But how can I actually find out if
Cinderella really has the panties with her…”

“How about flipping their skirts?”
Shouma suggested.

“Rejected.”

“Should I investigate? I’m really
good at that sort of thing,” Koharu offered.

“I don’t think that investigating
that would be a good idea.”

Though Koharu could probably put up a
camera inside the girl’s changing room, the risk would be too
great. What would happen if someone found that camera?

“Well, what else could you do,
Kiryuu?”

“Say, Kiryuu-kun, who do you think
Cinderella is?”

“Let me think…”

Between Sayuki and Yuika, who had the
highest possibility of being Cinderella? Judging from the information
at hand, the scales drastically tipped towards a certain girl.

The door to the room wasn’t locked,
and one girl was currently sitting in said room. As she stood by the
window, the soft summer breeze gently made her hair flutter, and when
she noticed Keiki’s presence, she slowly turned around.

“Oh, you’re awfully late. I didn’t
think that you would come by today.”

“It’s just Sayuki-senpai here?”

“The other two didn’t think that
you would come by, so they went home already. I happened to run into
Keiki-kun because I stayed behind, fufu.”

“Why do you sound so happy about
that?”

While he was saying that, he had a
completely different thought in his mind. And that was nothing more
than the girl who was currently right in front of him. Keiki’s
Senpai, the club president of the calligraphy club, and a hardcore
masochist. Additionally, a Cinderella candidate with a very high
potential of being the true Cinderella; Tokihara Sayuki.

On the day of the cleaning operation,
she was the last girl to leave the club room according to Mizuha.
Basically, she was the person who stayed behind the longest. She
really had the highest possibility of being the Cinderella who left
behind that love letter.

“Keiki-kun, what’s wrong?” She
looked at Keiki with a perplexed expression.

At first glance, she was just like
always. Her gestures, her way of talking, her atmosphere. It was the
normal Tokihara Sayuki. If she really was Cinderella, she was playing
it cool really well.

“I have something important to talk
about with Sayuki-senpai.”

“What might that be? I won’t tell
you my three sizes, you know?”

“That’s not it at all.”

“Then… do you finally want to make
me your pet?”

The girl said this clearly in jest. But
Keiki answered seriously, and contrary to her expectations.

“That’s right. I might actually
just do that.”

“……Eh?” The girl’s eyes
opened wide in surprise.

While the girl was still standing at
the window, Keiki softly put his hand on her snow white cheeks. This
might actually be the turning point of their relationship. It might
result in destroying their Kouhai-Senpai relationship, and forming a
new bond. Keiki said the words that Sayuki had been waiting for for
so long.